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Prostate

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https://www.readbyqxmd.com/read/28631436/characterization-of-a-novel-p110%C3%AE-specific-inhibitor-bl140-that-overcomes-mdv3100-resistance-in-castration-resistant-prostate-cancer-cells
#1
Chenchen He, Shaofeng Duan, Liang Dong, Yifen Wang, Qingting Hu, Chunjing Liu, Marcus L Forrest, Jeffrey M Holzbeierlein, Suxia Han, Benyi Li
BACKGROUND: Our previous studies demonstrated that the class IA PI3K/p110β is critical in castration-resistant progression of prostate cancer (CRPC) and that targeting prostate cancer with nanomicelle-loaded p110β-specific inhibitor TGX221 blocked xenograft tumor growth in nude mice, confirming the feasibility of p110β-targeted therapy for CRPCs. To improve TGX221's aqueous solubility, in this study, we characterized four recently synthesized TGX221 analogs. METHODS: TGX221 analog efficacy were examined in multiple prostate cancer cell lines with the SRB cell growth assay, Western blot assay for AKT phosphorylation and cell cycle protein levels...
June 20, 2017: Prostate
https://www.readbyqxmd.com/read/28631332/inhibition-of-microrna-500-has-anti-cancer-effect-through-its-conditional-downstream-target-of-tfpi-in-human-prostate-cancer
#2
Bing Cai, Wei Chen, Yue Pan, Hongde Chen, Yirong Zhang, Zhiliang Weng, Yeping Li
PURPOSE: We investigated the prognostic potential and regulatory mechanism of microRNA-500 (miR-500), and human gene of tissue factor pathway inhibitor (TFPI) in prostate cancer. METHODS: MiR-500 expression was assessed by qRT-PCR in prostate cancer cell lines and primary tumors. Cancer patients' clinicopathological factors and overall survival were analyzed according to endogenous miR-500 level. MiR-500 was downregulated in DU145 and VCaP cells. Its effect on prostate cancer proliferation, invasion in vitro, and tumorigenicity in vivo, were probed...
June 20, 2017: Prostate
https://www.readbyqxmd.com/read/28617988/mir-145-detection-in-urinary-extracellular-vesicles-increase-diagnostic-efficiency-of-prostate-cancer-based-on-hydrostatic-filtration-dialysis-method
#3
Yong Xu, Sihua Qin, Taixue An, Yueting Tang, Yiyao Huang, Lei Zheng
BACKGROUND: Extracellular vesicles (EVs) can be detected in body fluids and may serve as disease biomarkers. Increasing evidence suggests that circulating miRNAs in serum and urine may be potential non-invasive biomarkers for prostate cancer (PCa). In the present study, we aimed to investigate whether hydrostatic filtration dialysis (HFD) is suitable for urinary EVs (UEVs) isolation and whether such reported PCa-related miRNAs can be detected in UEVs as PCa biomarkers. METHODS: To analyze EVs miRNAs, we searched for an easy and economic method to enrich EVs from urine samples...
June 15, 2017: Prostate
https://www.readbyqxmd.com/read/28594087/adult-prostatic-sarcoma-a-contemporary-multicenter-rare-cancer-network-study
#4
Berardino De Bari, Bradley Stish, Mark Wayne Ball, Yacob Habboush, Paul Sargos, Marco Krengli, Alberto Bossi, Armando Stabile, Claudio Sole Pesutic, Laëtitia Lestrade, Robert Jan Smeenk, Barbara Alicja Jereczek-Fossa, Zilli Thomas, Gilles Créhange, Filippo Alongi, Nicholas Zaorsky, Mahmut Ozsahin
INTRODUCTION: Adult prostatic sarcoma (PS) is a rare disease. While surgery is considered the standard approach, the role of other therapies is not completely established. We report results of the largest multicentric contemporary cohort of PS patients. MATERIALS AND METHODS: This study included 61 adult PS patients treated in 16 American and European Institutions. Median age was 64.4 years (range: 22-87). Curative surgery was delivered in 48 patients (prostatectomy = 26, cystoprostatectomy = 22), usually with lymphadenectomy (n = 40)...
June 8, 2017: Prostate
https://www.readbyqxmd.com/read/28594074/testosterone-and-dihydrotestosterone-levels-in-the-transition-zone-correlate-with-prostate-volume
#5
Tomislav Pejčić, Tomislav Tosti, Živoslav Tešić, Borivoj Milković, Dejan Dragičević, Milutin Kozomara, Milica Čekerevac, Zoran Džamić
BACKGROUND: There is still no consensus regarding intraprostatic androgen levels and the accumulation of androgens in the hyperplastic prostatic tissue. The current opinion is that intraprostatic dihydrotestosterone (DHT) concentrations are maintained but not elevated in benign prostatic hyperplasia (BPH), while there is no similar data concerning intraprostatic testosterone (T). METHODS: Tissue T (tT) and tissue DHT (tDHT) concentration were determined in 93 patients scheduled for initial prostate biopsy...
June 8, 2017: Prostate
https://www.readbyqxmd.com/read/28585762/upregulation-of-the-long-non-coding-rna-falec-promotes-proliferation-and-migration-of-prostate-cancer-cell-lines-and-predicts-prognosis-of-pca-patients
#6
Ruizhe Zhao, Feng Sun, Xiaoyu Bei, Xingjie Wang, Yiping Zhu, Chenyi Jiang, Fujun Zhao, Bangmin Han, Shujie Xia
BACKGROUND: LncRNAs are aberrantly expressed in various cancer types and were found to be a responsible prognosis biomarker and therapeutic target of many human cancers. METHODS: In this study, we characterized the expression profile of FALEC in prostate cancer and paired histologically normal tissues. Additionally, biological function of FALEC in prostate cancer cell lines was determined by in vitro and in vivo assays. RESULTS: In a total of 85 patients, FALEC expression was significantly increased in clinical PCa tissues compared to adjacent normal tissues, and can be considered as an independent prognostic factor in patients with PCa...
June 6, 2017: Prostate
https://www.readbyqxmd.com/read/28573651/periprostatic-innervation-new-issues-based-on-segmental-analysis-of-10-human-cadaver-pelvic-blocs
#7
Tiago M Rodrigues, Anuar I Mitre, Luiz Fernando F da Silva, Lísias N Castilho, Fabiano A Simões, Paulo H N Saldiva, Miguel Srougi
BACKGROUND: The exact paths of periprostatic nerves have been under debate over the last decades. In the present study, the topographic distribution of nerves around the prostate and their relative distances from the prostatic capsule were analyzed in male cadaver visceral blocs. METHODS: The pelvic organs from ten fresh male cadavers were removed and serial sectioned en bloc for histological investigation. The macroslices was divided into four sectors. Each sector was centrally covered with a raster dividing each sector in three subsectors numbered clockwise...
June 2, 2017: Prostate
https://www.readbyqxmd.com/read/28557065/lactate-dehydrogenase-predicts-combined-progression-free-survival-after-sequential-therapy-with-abiraterone-and-enzalutamide-for-patients-with-castration-resistant-prostate-cancer
#8
Keiichiro Mori, Takahiro Kimura, Hajime Onuma, Shoji Kimura, Toshihiro Yamamoto, Hiroshi Sasaki, Jun Miki, Kenta Miki, Shin Egawa
BACKGROUND: An array of clinical issues remains to be resolved for castration-resistant prostate cancer (CRPC), including the sequence of drug use and drug cross-resistance. At present, no clear guidelines are available for the optimal sequence of use of novel agents like androgen-receptor axis-targeted (ARAT) agents, particularly enzalutamide, and abiraterone. METHODS: This study retrospectively analyzed a total of 69 patients with CRPC treated with sequential therapy using enzalutamide followed by abiraterone or vice versa...
May 30, 2017: Prostate
https://www.readbyqxmd.com/read/28556958/downregulation-of-androgen-receptors-by-naaso2-via-inhibition-of-akt-nf-%C3%AE%C2%BAb-and-hsp90-in-castration-resistant-prostate-cancer
#9
Yunlim Kim, Sang Eun Park, Jeong-Weon Moon, Bong-Min Kim, Ha-Gyeong Kim, In Gab Jeong, Sangjun Yoo, Jae Beom Ahn, Dalsan You, Jhang Ho Pak, Sujong Kim, Jung Jin Hwang, Choung-Soo Kim
BACKGROUND: Androgen and androgen receptor (AR) play essential roles in the development and maintenance of prostate cancer. The recently identified AR splice variants (AR-Vs) have been considered as a plausible mechanism for the primary resistance against androgen deprivation therapy (ADT) in castration-resistant prostate cancer (CRPC). Sodium meta-arsenite (NaAsO2 ; KML001; Kominox), a trivalent arsenical, is an orally bioavailable and water soluble, which is currently in phase I/II clinical trials for the treatment of prostate cancer...
May 30, 2017: Prostate
https://www.readbyqxmd.com/read/28547760/blinded-review-of-archival-radical-prostatectomy-specimens-supports-that-contemporary-gleason-score-6-prostate-cancer-lacks-metastatic-potential
#10
Luciano A Nunez Bragayrac, Christine Murekeyisoni, Michael J Vacchio, Kristopher Attwood, Diana C Mehedint, James L Mohler, Gissou Azabdaftari, Bo Xu, Eric C Kauffman
BACKGROUND: Retrospective identification of Gleason pattern 4 in metastatic Gleason score 3 + 3 = 6 (GS6) radical prostatectomy (RP) specimens has suggested true GS6 prostate cancer (CaP) lacks metastatic potential. However, pathologist awareness of study design and metastasis outcomes at the time of RP review might have introduced upgrading bias. We used pathologist-blinded methodology for unbiased characterization of metastasis rates for contemporarily defined pathologic GS6 (pGS6) CaP...
May 26, 2017: Prostate
https://www.readbyqxmd.com/read/28543353/effect-of-pathologic-revision-and-ki67-and-erg-immunohistochemistry-on-predicting-radical-prostatectomy-outcome-in-men-initially-on-active-surveillance
#11
Leonard P Bokhorst, Monique J Roobol, Chris H Bangma, Geert J van Leenders
OBJECTIVE: To investigate if pathologic biopsy reevaluation and implementation of immunohistochemical biomarkers could improve prediction of radical prostatectomy outcome in men initially on active surveillance. METHODS: Biopsy specimens from diagnosis until switching to radical prostatectomy in men initially on active surveillance in the Dutch part of the Prostate cancer Research International Active Surveillance (PRIAS) study were collected and revised by a single pathologist...
May 24, 2017: Prostate
https://www.readbyqxmd.com/read/28543179/genetic-ancestry-and-prostate-cancer-susceptibility-snps-in-puerto-rican-and-african-american-men
#12
Margarita Irizarry-Ramírez, Rick A Kittles, Xuemei Wang, Jeannette Salgado-Montilla, Graciela M Nogueras-González, Ricardo Sánchez-Ortiz, Lourdes Guerrios, Keila Rivera, Ebony Shah, Ina Prokhorova, Pamela Roberson, Patricia Troncoso, Curtis A Pettaway
BACKGROUND: The Puerto Rican (PR) population is a racially admixed population that has a high prostate cancer (PCa) mortality rate. We hypothesized in this pilot study that West African Ancestry (WAA) was associated with PCa in this heterogeneous (PR) population. METHODS: A case/case and case/control study was performed. Controls, 207 African American (AA) and 133 PR were defined as men with no PCa, a serum PSA < 2.5 ng/mL and a negative rectal examination...
May 24, 2017: Prostate
https://www.readbyqxmd.com/read/28503903/the-23rd-annual-prostate-cancer-foundation-scientific-retreat-report
#13
REVIEW
Andrea K Miyahira, Howard R Soule
INTRODUCTION: The 23rd Annual Prostate Cancer Foundation (PCF) Scientific Retreat was convened October 27-29, 2016, in Carlsbad, CA. METHODS: This event focuses on the latest advances in basic, translational, and clinical prostate cancer research with the greatest promise for advancing our understanding of prostate cancer biology and improving patient outcomes and quality of life. RESULTS: Themes highlighted at this year's meeting included: i) targeting DNA repair deficiency in prostate cancer; ii) optimizing the use of Radium-223 and bone-targeting agents; iii) advances in cancer immunotherapeutic approaches; iv) targeting developmental pathways in prostate cancer; v) advances in circulating tumor DNA technology and applications; vi) precision survivorship; and vii) novel treatments and treatment strategies in prostate cancer...
May 14, 2017: Prostate
https://www.readbyqxmd.com/read/28497488/the-common-parasite-toxoplasma-gondii-induces-prostatic-inflammation-and-microglandular-hyperplasia-in-a-mouse-model
#14
Darrelle L Colinot, Tamila Garbuz, Maarten C Bosland, Liang Wang, Susan E Rice, William J Sullivan, Gustavo Arrizabalaga, Travis J Jerde
BACKGROUND: Inflammation is the most prevalent and widespread histological finding in the human prostate, and associates with the development and progression of benign prostatic hyperplasia and prostate cancer. Several factors have been hypothesized to cause inflammation, yet the role each may play in the etiology of prostatic inflammation remains unclear. This study examined the possibility that the common protozoan parasite Toxoplasma gondii induces prostatic inflammation and reactive hyperplasia in a mouse model...
May 12, 2017: Prostate
https://www.readbyqxmd.com/read/28370267/external-validation-of-a-nomogram-for-identification-of-pathologically-favorable-disease-in-intermediate-risk-prostate-cancer-patients
#15
Jean-Baptiste Beauval, Bastien Cabarrou, Giorgio Gandaglia, Pierre-Marie Patard, Adil Ouzzane, Alexandre de la Taille, Michel Soulié, Alberto Briganti, Guillaume Ploussard, François Rozet, Mathieu Roumiguié
OBJECTIVE: To establish an external validation of the new nomogram from Gandaglia et al which provides estimates of the probability of pathological favorable disease in pre-operatively defined intermediate-risk PCa. PATIENTS AND METHODS: Overall, 2928 intermediate-risk PCa patients according to the D'Amico classification undergoing RP and bilateral lymph node dissection in seven academic centres between 2000 and 2011. Pathologically favorable PCa was defined as low-grade organ-confined disease...
April 2, 2017: Prostate
https://www.readbyqxmd.com/read/28485104/microrna-181a-promotes-docetaxel-resistance-in-prostate-cancer-cells
#16
Cameron M Armstrong, Chengfei Liu, Wei Lou, Alan P Lombard, Christopher P Evans, Allen C Gao
BACKGROUND: Docetaxel is one of the primary drugs used for treating castration resistant prostate cancer (CRPC). Unfortunately, over time patients invariably develop resistance to docetaxel therapy and their disease will continue to progress. The mechanisms by which resistance develops are still incompletely understood. This study seeks to determine the involvement of miRNAs, specifically miR-181a, in docetaxel resistance in CRPC. METHODS: Real-time PCR was used to measure miR-181a expression in parental and docetaxel resistant C4-2B and DU145 cells (TaxR and DU145-DTXR)...
June 2017: Prostate
https://www.readbyqxmd.com/read/28480542/the-effect-of-non-steroidal-anti-inflammatory-drugs-on-risk-of-benign-prostatic-hyperplasia
#17
Lotta H Nygård, Kirsi Talala, Kimmo Taari, Teuvo L J Tammela, Anssi Auvinen, Teemu J Murtola
BACKGROUND: Inflammation may play a role in pathogenesis of benign prostatic hyperplasia (BPH). However, the role of non-steroidal anti-inflammatory drugs (NSAIDs) as BPH risk factor is unclear. The objective of this study was to examine risk of BPH by NSAID use in a population-based cohort. METHODS: A total of 74 754 Finnish men without previous BPH at baseline in 1996-1999 were linked to national medication reimbursement database for information on physician-prescribed NSAID purchases during 1995-2009...
June 2017: Prostate
https://www.readbyqxmd.com/read/28480526/profile-of-cell-proliferation-and-apoptosis-activated-by-the-intrinsic-and-extrinsic-pathways-in-the-prostate-of-aging-rats
#18
Amanda C R Gonzaga, Gabriel H Campolina-Silva, Hipácia Werneck-Gomes, Júnia D Moura-Cordeiro, Letícia C Santos, Germán A B Mahecha, Mônica Morais-Santos, Cleida A Oliveira
BACKGROUND: Estrogens acting through the receptors ERα and ERβ participate in prostate normal growth and cancer. ERβ is highly expressed in the prostate epithelium, playing pro-apoptotic, anti-proliferative, and pro-differentiation roles. Apoptosis is activated by the intrinsic pathway after castration and by the extrinsic pathway after ERβ agonist treatment. This differential activation of apoptotic pathways is important since a major problem in the treatment of prostate cancer is the recurrence of tumors after androgen withdrawal...
June 2017: Prostate
https://www.readbyqxmd.com/read/28449236/discovery-of-lhrh-and-development-of-lhrh-analogs-for-prostate-cancer-treatment
#19
REVIEW
Andrew V Schally, Norman L Block, Ferenc G Rick
The discovery, isolation, elucidation of structure, synthesis, and initial testing of the neuropeptide hypothalamic luteinizing hormone-releasing hormone (LHRH), which regulates reproduction, is briefly described. The design, synthesis, and experimental and clinical testing of agonistic analogs of LHRH is extensively reviewed focusing on the development of new methods for the treatment of prostate cancer. Subsequent development of antagonistic analogs of LHRH is then faithfully recounted with special emphasis on therapy of prostate cancer and BPH...
June 2017: Prostate
https://www.readbyqxmd.com/read/28429423/erratum
#20
Alice S Whittemore
No abstract text is available yet for this article.
June 2017: Prostate
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